S
M
T
W
T
F
S
26
89°
75°
27
89°
76°
28
90°
75°
29
88°
75°
30
88°
74°
31
91°
75°
1
92°
76°
2
92°
72°
3
91°
75°
4
91°
74°
5
90°
72°
6
90°
72°
7
92°
74°
8
91°
75°
9
92°
76°
10
93°
74°
11
92°
75°
12
92°
75°
13
88°
72°
14
88°
71°
15
89°
71°
16
88°
72°
17
88°
72°
18
89°
73°
19
91°
72°
20
91°
75°
21
90°
74°
22
89°
75°
23
90°
76°
24
92°
75°
25
92°
76°
26
90°
74°
27
91°
75°
28
92°
74°
29
91°
73°
30
88°
73°
31
87°
71°
1
89°
70°
2
86°
70°
3
Hist. Avg.
89°
72°
4
Hist. Avg.
88°
72°
5
Hist. Avg.
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 70° and 76°. The average high for August is 90° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
